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Correlation functions

  1. May 29, 2012 #1
    I would like to know what is the difference between real-space correlation and redshift-space correlation functions?
     
  2. jcsd
  3. May 30, 2012 #2

    Drakkith

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    Staff: Mentor

    I've never heard of "redshift-space". What is that exactly?
     
  4. May 30, 2012 #3
    our “third dimension” in cosmology
    is not radial distance but redshift. The two are related
    by the Hubble expansion but also affected by peculiar velocities. This is called as redshift-space. Due to the peculiar velocities of galaxies, there are objects that appear stretched towards us..
     
  5. May 30, 2012 #4

    Drakkith

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    Staff: Mentor

    Ah ok. So it's pretty much where the effects of cosmological expansion start to become noticeable then?
     
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